
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
  <style type="text/css">
    .grid {
      margin: auto;
      width: 530px;
      text-align: center;
    }
    .grid table {
      border-top: 1px solid #C2D89A;
      width: 100%;
      border-collapse: collapse;
    }
    .grid th,td {
      padding: 10;
      border: 1px dashed #F3DCAB;
      height: 35px;
      line-height: 35px;
    }
    .grid th {
      background-color: #F3DCAB;
    }
    .grid .book {
      padding-bottom: 10px;
      padding-top: 5px;
      background-color: #F3DCAB;
    }
  </style>
</head>
<body>
  <div id="app">
    <div class="grid">
      <div>
        <h1>图书管理</h1>
        <div class="book">
          <div>
            <label for="id">
              编号：
            </label>
            <input type="text" id="id" v-model="id" :disabled='flag'>
            <label for="name">
              名称：
            </label>
            <input type="text" id="name" v-model="name" v-focus>
            <button @click='handle' :disabled="submitFlag">提交</button>
          </div>
        </div>
      </div>
	  <div>
		<span>{{total}}</span>
	  </div>
      <table>
        <thead>                                             
          <tr>
            <th>编号</th>
            <th>名称</th>
            <th>时间</th>
            <th>操作</th>
          </tr>
        </thead>
        <tbody>
		<tr v-for="(item,index) in books" :key="item.id">
			<td>{{item.id}}</td>
			<td>{{item.name}}</td>
			<td>{{item.date|time('yyyy-mm-dd hh:mm:ss')}}</td>
			<td>
				<a href="" @click.prevent="editBook(item.id)">修改</a>
				<span>|</span>
				<a href="" @click.prevent="delBook(item.id)">删除</a>
			</td>
		</tr>
        </tbody>
      </table>
    </div>
  </div>
  <script type="text/javascript" src="./js/vue.js"></script>
  <script type="text/javascript">
    /*
      图书管理-添加图书
    */
	Vue.directive('focus',{
	inserted:function(el){
		el.focus();
	}
	})
	Vue.filter('time',function(val,format){
		  function dateFormat(date, format) {
          if (typeof date === "string") {
              var mts = date.match(/(\/Date\((\d+)\)\/)/);
              if (mts && mts.length >= 3) {
                  date = parseInt(mts[2]);
              }
          }
          date = new Date(date);
          if (!date || date.toUTCString() == "Invalid Date") {
              return "";
          }
          var map = {
              "M": date.getMonth() + 1, //月份 
              "d": date.getDate(), //日 
              "h": date.getHours(), //小时 
              "m": date.getMinutes(), //分 
              "s": date.getSeconds(), //秒 
              "q": Math.floor((date.getMonth() + 3) / 3), //季度 
              "S": date.getMilliseconds() //毫秒 
          };

          format = format.replace(/([yMdhmsqS])+/g, function(all, t) {
              var v = map[t];
              if (v !== undefined) {
                  if (all.length > 1) {
                      v = '0' + v;
                      v = v.substr(v.length - 2);
                  }
                  return v;
              } else if (t === 'y') {
                  return (date.getFullYear() + '').substr(4 - all.length);
              }
              return all;
          });
          return format;
      }
		return dateFormat(val,format);
	})
	
    var vm = new Vue({
      el: '#app',
      data: {
	  flag:false,
	  submitFlag:false,
		id:'',
		name:'',
        books: [{
          id: 1,
          name: '三国演义',
          date: ''
        },{
          id: 2,
          name: '水浒传',
          date: ''
        },{
          id: 3,
          name: '红楼梦',
          date: ''
        },{
          id: 4,
          name: '西游记',
          date: ''
        }]
      },methods:{
		//添加新项
			handle:function(){
				if(this.flag){
					//编辑图书部分
					this.books.some((item)=>{
						if(item.id===this.id){
							return item.name=this.name
							<!-- console.log(item.name,this.name) -->
						}
					})
					this.flag=false
				}else{
					//增加图书部分
					let newBooks={
						id:this.id,
						name:this.name,
						data:''
					}
					<!-- console.log(newBooks) -->
					this.books.push(newBooks)
				}
				this.id=this.name=''	
			},editBook:function(id){
				//编辑图书部分
				<!-- console.log(id) -->
				this.flag=true
				const book=this.books.filter((item)=>{
					return item.id===id;
					//返回的是不符合条件的数据
				})
				<!-- console.log(book) -->
				this.id=book[0].id
				this.name=book[0].name
				this.data=book[0].data
			},delBook:function(id){
				<!-- console.log(id) -->
				const book=this.books.filter((item)=>{
				return item.id!==id
				})
				<!-- console.log(book) -->
				this.books=book
			}
		},watch:{
			//监听的是name的变化
				name:function(newVal){
					const val=this.books.some((item)=>{
						return item.name===newVal
					})
				this.submitFlag=val
			}
		},computed:{
			total:function(){
				return this.books.length
			}
		}
	})
  </script>
</body>
</html>
